#!/usr/bin/env python
# -*- coding: utf-8 -*-

from time import time, sleep

t0 = time()
print 't0:', t0
sleep(1)
t1 = time()
print 't1:', t1
sleep(2)
t2 = time()
print 't2:', t2
print
print 't1 - t0:', t1 - t0
print 't2 - t1:', t2 - t1
print 't2 - t0:', t2 - t0
